Each Q70 has five telescope lens, multi-coated, high-index glass elements for sharp, high-contrast images with excellent color correction. Eye relief is a luxurious 20mm. All telescope eyepieces in the Orion Q70 series are parfocal, so you can change eyepieces without refocusing. Machined housings have fold-down rubber eyeguards and a rubber grip band. Threaded chrome-plated barrels accept 2" filters. Two end caps are included.